Leach-Biltwell Motor Company manufactured and distributed the Leach luxury automobile from 1919 to 1924 in Los Angeles, California.

[2][1] The Leach Power-Plus Six used a model 9N Red Seal Continental 303.1 cubic inch 60 hp inline six-cylinder engine.

Leach popularized the distinctive "California top" that was a precursor of the "hardtop" body style thirty years later.

[2] For luxury customization, the Leach included a tilt and telescoping steering column, removable steering wheel (to be used as an anti-theft feature), a directional signal/stop light box with a dashboard switch, lighted aluminum steps instead of running boards, a one piece windshield and disc wheels with chromium rims.

Although primarily sold in California, with the slogan "The Aristocrat of Motordom", Leach advertised in major magazines to attract national attention.